<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>

        <div>
            <input type="text" v-model="msg">
            <h1>{{msg}}</h1>
            <br>
            <input type="radio" v-model="gender" value="男">男
            <input type="radio" v-model="gender" value="女">女
            <h2>{{gender}}</h2>
        </div>
        <script src="../js/vue.js"></script>
        <script>
            let v= new Vue({
                el:"div",
                data:{
                    msg:"双向绑定",
                    gender:"男"
                }
            })
        </script>
    </body>
</html>